Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 326 · 40 questions

The trick (Last digits only): Multiply (or add) only the last digits of the two numbers. The last digit of that result is the last digit the answer must have. Different last digit → wrong for sure. Same last digit → it passes the check (work it out in full to be certain).

1. 1.Last-digit check: is 434 + 282 = 716 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 338 + 779 = 1122 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 59 × 84 = 4953 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 310 + 167 = 477 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 67 × 66 = 4424 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 30 × 64 = 1920 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 35 × 18 = 630 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 730 + 932 = 1657 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 915 + 396 = 1304 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 189 + 840 = 1029 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 92 × 59 = 5428 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 48 × 56 = 2688 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 78 × 14 = 1092 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 389 + 840 = 1229 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 922 + 713 = 1627 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 816 + 353 = 1169 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 92 × 27 = 2487 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 15 × 82 = 1230 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 27 × 69 = 1863 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 69 × 79 = 5451 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 263 + 969 = 1232 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 534 + 162 = 696 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 50 × 29 = 1450 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 66 × 65 = 4293 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 71 × 24 = 1700 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 72 × 21 = 1518 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 62 × 98 = 6085 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 47 × 69 = 3234 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 572 + 205 = 769 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 360 + 285 = 645 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 403 + 539 = 942 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 33 × 33 = 1089 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 38 × 12 = 456 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 756 + 117 = 876 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 19 × 87 = 1653 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 436 + 154 = 590 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 39 × 34 = 1326 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 35 × 58 = 2030 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 25 × 56 = 1400 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 254 + 954 = 1201 right or wrong? (a) Right (b) Wrong

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks